This is actually happening now in the US with the history of slavery. For example, 41% of people in a recent survey believe that the civil war was about something other than slavery, when the historical record is clear that slavery was the driving issue. Recently Trump announced that he thinks the US should be engaged in “patriotic education.” He stated, “Children must be taught that America is “an exceptional, free and just nation, worth defending, preserving and protecting.” We know what this means in states that take this approach to education – white-washing the history of slavery.
Source: The Holocaust and Losing History | NeuroLogica Blog
Go read the rest, sadly Trump is following the playbook that worked so well for Hitler, any bets on when we see book burnings.